:root {
  --bg-interaction-gold: rgba(80,180,80,0.34);
  --bg-interaction-gold-strong: rgba(100,200,100,0.76);
  --bg-interaction-glow: rgba(100,200,100,0.14);
}

body.background-interaction-ready {
  position: relative;
  isolation: isolate;
}

.background-interaction-canvas {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: -1;
  opacity: 0;
  transition: opacity 320ms ease;
}

body.background-interaction-ready .background-interaction-canvas {
  opacity: 1;
}

body.background-interaction-disabled .background-interaction-canvas {
  display: none;
}

@media (prefers-reduced-motion: reduce), (hover: none), (pointer: coarse) {
  .background-interaction-canvas {
    display: none !important;
  }
}